Engine frame



A. FEROY Sept. 4, 1945.

ENGINE FRAME Filed Sept. 4, 1944 '3 Sheets-Sheet l IIQJENTOR v s Wfw AM 5 Sept. 4 I A. FEROY 2,384,291

. ENGINE FRAME Filed Sept. 4, 1944 a Sheets-Sheet 2 w I w B -4 l N Q g 4 I I a D l\ I 0 J INVENTOB. BY A e F m f 1 ATTORNEYS p 4, 1945. A. FEROY ENGINE FRAME Filed p 4, 1944 3 Sheets-Sheet 3 ANVENTO/Z rm? Fe 5T ATTOENE Y5 Patented Sept. 4, 1945 Diesel and Aircraft Corporation, New York, N. Y., a corporation of New York Application September 4, 1944, Serial No. 552,600

2 Claims.

This invention relates to engine frames in general, and more specifically to cylinder liner and cylinder block constructions for opposed-piston internal combustion engines. The invention is applicable to all such engines of crosshead construction, i. e. those not using trunk pistons, but it will be described as applied to an engine of the class commonly called barrel type, axial, or round engines, the class having cylinders parallel to the shaft.

An object of the invention is to provide a welded frame structure for an opposed-piston barrel engine, with removable cylinder liners, each having its own water jacket and each received in a bore in the frame, the same bore serving also as crosshead guides for the crossheads of a pair of opposed-piston members operable in the liner. Another object is to provide a cylinder assembly for an opposed-piston barrel engine with a welded frame having bores receiving removable cylinder liners, each complete with its own water jacket and each located axially by the injection nozzle or precombustion chamber at the middle of the liners length, and steadied in the bore of the frame by resilient rings at each end of the liner, which rings serve to pack the water passages connecting the water manifolds of the frame with the water jacket of the liner.

These and other objects of the invention will be more apparent from the following description in connection with the drawings in which Fig. 1 is a longitudinal section of a cylinder liner;

Fig. 2 is a transverse section on the line 2-2 of Fig. 1;

Fig. 3 is a transverse section on the line 3-3 of Fig. 1;

Fig. 4 is a transverse section on the line 4-4 .of Fig. 1;

Fig. 5 is a longitudinal section of the frame showing a cylinder liner in place;

Fig. 6 is a central transverse section on the line 66 of Fig. 5; and

Fig. 7 is a transverse section on the line '!--1 of Fig. 5.

As shown in Figs. 1-4, the cylinder liner I0 may be built up of tubes and rings, and made integral by furnace brazing; alternately the liner Ill could be cast in one piece, or built up from a casting with water jacket tubes added. Essentially the cylinder liner in comprises inner tube ll forming the cylinder wall, a central ring I2 having a boss l3 for the injector and longitudinal fins I4 to aid in radiation of heat to the cooling water, a pair of rings l5 and I6 having intake ports I! and exhaust ports I8 and having longitudinal water passages I9 extending between the ports and connecting the central water jacket 20 with the end portions 2| of the jacket, and a pair of rings 22 closing the jacket at the ends of liner l0. Outside the rings, outer tube 23 in four lengths forms a closure for the water jacket. End rings 22 are provided with Water ports 24 thru which water may enter and leave the liner jacket.

Half of the engine frame is shown in Fig. 5, the other half being similar, providing a structure with a plurality of bores 10 of one diameter from end to end, receiving the cylinder liners l0 centrally, and serving as crosshead guides 5| at both ends of the frame. See also Figs. 6 and '7. Each liner I0 is a free lit in bore H3 in frame 50, and is located axially by precombustion chamber 52 piloted in a hole in frame 58 and threaded into liner I0. An injection nozzle might be used to locate liner i0 instead of the precup. At each end of liner I0, resilient rings 53 or neoprene or similar material separated by a perforated spacer 54 are clamped onto the end of the liner [0 by nut 55, and serve to steady or center liner I0 in frame 50 and to pack the water joint thru which cooling water may flow between water manifold 56 in frame 50 and jackets 2| of liner I0 thru ports 2t. Water manifold 56 at one end of frame 50 may serve as the water inlet manifold for all liners l0, and at the other end, as water outlet manifold.

Water in water manifold 56 is closed from ports I! or 18 by the air or exhaust manifold walls 51, formed integral or welded into frame 50. Plates 59 also form parts of the water manifolds with inner tube 60 which may surround the engine shaft and support the main bearings therefor. Outer wall 6!, also tubular, serves to close the water manifolds exteriorly, and to form an outer shell on which to seat the closure for the casing, not shown. End plates 62 connect the several bores 10 and form flanges for connecting the end covers not shown to frame 50.

Having thus described the invention, it is obvious that the objects as stated have been attained. While one embodiment of the invencombustion engine comprising a welded structure including a central tube for housing the shaft of said engine, and a plurality of tubes spaced about and parallel to said central tube, each having a tubular bore of one diameter from end to end and serving as crosshead guides for said engine; in combination with a cylinder liner unit including its water jacket, freely fitting each of said tubular bores and serving to bush down the central portion thereof so that the cylinder bore of said engine will be substantially less than that of said crosshead guides, and means for locking said cylinder liner unit centrally in its tubular bore.

2. A frame for an opposed-piston internal combustion engine comprising a welded structure in-, cluding a central tube for housing the shaft of said engine, a pair of plates forming with said cenunit in said tubular bore.

tral tube a water manifold at and surrounding each end of said central tube, and a plurality of tubes spaced about and parallel to said central tube and passing thru holes in said pairs of plates, each of said tubes having a tubular bore of one diameter from end to end; in combination with a cylinder liner unit including its water jacket, freely fitting each of said tubular bores, 21 fuel injection member entering each tubular bore and cylinder liner radially in its central plane to lock said liner axially in said tubular bore, and resilient water port packing means at each end of said liner unit to seal the flow of water between said water manifolds in said frame and said liner water jackets while centering said liner ARNE FEROY. 

